#define _CRT_SECURE_NO_WARNINGS 1

#include "Date.h"

Date::Date(int year, int month, int day)
{
	_year = year;
	_month = month;
	_day = day;
}

Date::~Date()
{

}

Date::Date(const Date& d)
{
	_year = d._year;
	_month = d._month;
	_day = d._day;
}

Date& Date::operator=(const Date& d)
{
	if (this != &d)
	{
		_year = d._year;
		_month = d._month;
		_day = d._day;
	}

	return *this;
}

void Date::Print()
{
	cout << _year << "-" << _month << "-" << _day << endl;
}

Date& Date::operator+=(int day)
{
	if (day < 0)
	{
		return *this -= -day;
	}
	_day += day;
	while (_day > GetMonthDay(_year,_month))
	{
		_day -= GetMonthDay(_year, _month);
		++_month;
		if (_month == 13)
		{
			++_year;
			_month = 1;
		}
	}

	return *this;
}

Date Date::operator+(int day) const
{
	Date tmp = *this;
	tmp += day;
	
	return tmp;
}

Date& Date::operator-=(int day)
{
	if (day < 0)
	{
		return *this += -day;
	}
	_day -= day;
	while (_day <= 0)
	{
		--_month;
		if (_month == 0)
		{
			--_year;
			_month = 12;
		}
		_day += GetMonthDay(_year, _month);
	}

	return *this;
}

Date Date::operator-(int day) const
{
	Date tmp = *this;
	tmp -= day;

	return tmp;
}

Date& Date::operator++()
{
	*this += 1;

	return *this;
}

Date Date::operator++(int)
{
	Date tmp = *this;
	*this += 1;
	return tmp;
}

Date& Date::operator--()
{
	*this -= 1;

	return *this;
}


Date Date::operator--(int)
{
	Date tmp = *this;
	*this -= 1;

	return tmp;
}

bool Date::operator<(const Date& d) const
{
	if (_year < d._year)
	{
		return true;
	}
	else if (_year == d._year)
	{
		if (_month < d._month)
		{
			return true;
		}
		else if (_month == d._month)
		{
			return _day < d._day;
		}
	}

	return false;
}

bool Date::operator<=(const Date& d) const
{
	return  *this < d || *this == d;
}

bool Date::operator==(const Date& d) const
{
	return _year == d._year
		&& _month == d._month
		&& _day == d._day;
}

bool Date::operator!=(const Date& d) const
{
	return !(*this == d);
}

bool Date::operator>(const Date& d) const
{
	return !(*this <= d);
}

bool Date::operator>=(const Date& d) const
{
	return !(*this < d);
}



